岩盤応力評価のためのコア変形法(DCDA)

• 船戸 明雄

  応用地質株式会社 エネルギー事業部

• 伊藤 高敏

  東北大学 流体科学研究所

書誌事項

タイトル別名

• Diametrical Core Deformation Analysis (DCDA) Developed for In-situ Rock Stress Measurements
• ガンバン オウリョク ヒョウカ ノ タメ ノ コア ヘンケイホウ(DCDA)

抄録

DCDA is a new method for evaluating the in-situ stress of rocks based on the elliptical deformation of boring cores with stress relief. When a rock core sample is carved out by drilling, it becomes free from in-situ stress, and the expansion should occur elastically. If the condition of in-situ stress is anisotropic, the core must deform in an asymmetric manner. With the precise measurement of core diameters in each directions, the deviatoric stress S_Hmax <tt>－</tt>S_hmin and azimuths of S_Hmax and S_hmin could be determined from the circumferential variation of the measured diameter. In order to confirm the reliability of DCDA, laboratory verifications were conducted. The estimated stresses by DCDA agreed well with the applied stresses, and the directions of d_max coincide to the directions of the applied stresses. From these results, the effectiveness of DCDA was confirmed.

収録刊行物

• 資源と素材

  資源と素材 129 (8_9), 577-584, 2013

  一般社団法人 資源・素材学会

キーワード

• 応力解放
• 扁平
• 岩石コア
• 最大水平応力

詳細情報

• CRID: 1390001205281255936
• NII論文ID: 10031188227
• NII書誌ID: AA12188381
• DOI: 10.2473/journalofmmij.129.577
• ISSN: 18840450
• ISSN: 18816118
• NDL書誌ID: 024826133
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024826133
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可